Thermal and dielectric properties of low-density polyethylene/NaA zeolite composites
Само за регистроване кориснике
2022
Аутори
Marinkovic, FilipPopovic, Dusan
Jovanovic, Jelena
Stankovic, Branislav
Jevtić, Sanja
Adnadjevic, Borivoj
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
The effect of the weight fraction of NaA zeolite on thermal properties (specific heat capacity, thermal diffusivity, thermal conductivity) and dielectric properties (electrical conductivity, real and imaginary electric permittivity) of composites based on low-density polyethylene (LDPE) and NaA zeolite is examined. Composite samples containing from 5 to 30 wt% zeolite are prepared using the compression molding technique. The degree of dispersion and the weight fraction of filler in the LDPE/NaA zeolite composites are determined using X-ray diffraction. A linear decrease in the values of the specific heat capacity with an increase in the weight fraction of zeolite is observed using differential scanning calorimetry. The laser flash method is used to determine the thermal diffusivity of the composites. An increase in effective thermal diffusivity and abrupt increase in the range from 15 to 20 wt% of zeolite are established. It is demonstrated that effective thermal conductivity increases... with an increase in the weight fraction of zeolite, and an abrupt increase in the range from 15 to 20 wt% is observed. Dielectric spectroscopy measurements are performed to determine the real and imaginary parts of permittivity. An increase of real and imaginary parts of permittivity of LDPE/NaA zeolite composites, with increasing weight fraction of zeolite, is established. Two relaxation peaks of the imaginary parts of permittivity of LDPE/NaA zeolite composites are detected. An increase of electrical conductivity with increasing weight fraction of zeolite and abrupt increase in the range 15 to 20 wt% are noticed. (c) 2021 Society of Industrial Chemistry.
Кључне речи:
LDPE / NaA zeolite composites / thermal diffusivity / thermal conductivity / real and imaginary parts of permittivity / relaxation peaksИзвор:
Polymer International, 2022, 71, 1, 66-73Финансирање / пројекти:
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200146 (Универзитет у Београду, Факултет за физичку хемију) (RS-200146)
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200162 (Универзитет у Београду, Физички факултет) (RS-200162)
DOI: 10.1002/pi.6284
ISSN: 0959-8103
WoS: 000687945200001
Scopus: 2-s2.0-85113336189
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Marinkovic, Filip AU - Popovic, Dusan AU - Jovanovic, Jelena AU - Stankovic, Branislav AU - Jevtić, Sanja AU - Adnadjevic, Borivoj PY - 2022 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4998 AB - The effect of the weight fraction of NaA zeolite on thermal properties (specific heat capacity, thermal diffusivity, thermal conductivity) and dielectric properties (electrical conductivity, real and imaginary electric permittivity) of composites based on low-density polyethylene (LDPE) and NaA zeolite is examined. Composite samples containing from 5 to 30 wt% zeolite are prepared using the compression molding technique. The degree of dispersion and the weight fraction of filler in the LDPE/NaA zeolite composites are determined using X-ray diffraction. A linear decrease in the values of the specific heat capacity with an increase in the weight fraction of zeolite is observed using differential scanning calorimetry. The laser flash method is used to determine the thermal diffusivity of the composites. An increase in effective thermal diffusivity and abrupt increase in the range from 15 to 20 wt% of zeolite are established. It is demonstrated that effective thermal conductivity increases with an increase in the weight fraction of zeolite, and an abrupt increase in the range from 15 to 20 wt% is observed. Dielectric spectroscopy measurements are performed to determine the real and imaginary parts of permittivity. An increase of real and imaginary parts of permittivity of LDPE/NaA zeolite composites, with increasing weight fraction of zeolite, is established. Two relaxation peaks of the imaginary parts of permittivity of LDPE/NaA zeolite composites are detected. An increase of electrical conductivity with increasing weight fraction of zeolite and abrupt increase in the range 15 to 20 wt% are noticed. (c) 2021 Society of Industrial Chemistry. T2 - Polymer International T1 - Thermal and dielectric properties of low-density polyethylene/NaA zeolite composites EP - 73 IS - 1 SP - 66 VL - 71 DO - 10.1002/pi.6284 ER -
@article{ author = "Marinkovic, Filip and Popovic, Dusan and Jovanovic, Jelena and Stankovic, Branislav and Jevtić, Sanja and Adnadjevic, Borivoj", year = "2022", abstract = "The effect of the weight fraction of NaA zeolite on thermal properties (specific heat capacity, thermal diffusivity, thermal conductivity) and dielectric properties (electrical conductivity, real and imaginary electric permittivity) of composites based on low-density polyethylene (LDPE) and NaA zeolite is examined. Composite samples containing from 5 to 30 wt% zeolite are prepared using the compression molding technique. The degree of dispersion and the weight fraction of filler in the LDPE/NaA zeolite composites are determined using X-ray diffraction. A linear decrease in the values of the specific heat capacity with an increase in the weight fraction of zeolite is observed using differential scanning calorimetry. The laser flash method is used to determine the thermal diffusivity of the composites. An increase in effective thermal diffusivity and abrupt increase in the range from 15 to 20 wt% of zeolite are established. It is demonstrated that effective thermal conductivity increases with an increase in the weight fraction of zeolite, and an abrupt increase in the range from 15 to 20 wt% is observed. Dielectric spectroscopy measurements are performed to determine the real and imaginary parts of permittivity. An increase of real and imaginary parts of permittivity of LDPE/NaA zeolite composites, with increasing weight fraction of zeolite, is established. Two relaxation peaks of the imaginary parts of permittivity of LDPE/NaA zeolite composites are detected. An increase of electrical conductivity with increasing weight fraction of zeolite and abrupt increase in the range 15 to 20 wt% are noticed. (c) 2021 Society of Industrial Chemistry.", journal = "Polymer International", title = "Thermal and dielectric properties of low-density polyethylene/NaA zeolite composites", pages = "73-66", number = "1", volume = "71", doi = "10.1002/pi.6284" }
Marinkovic, F., Popovic, D., Jovanovic, J., Stankovic, B., Jevtić, S.,& Adnadjevic, B.. (2022). Thermal and dielectric properties of low-density polyethylene/NaA zeolite composites. in Polymer International, 71(1), 66-73. https://doi.org/10.1002/pi.6284
Marinkovic F, Popovic D, Jovanovic J, Stankovic B, Jevtić S, Adnadjevic B. Thermal and dielectric properties of low-density polyethylene/NaA zeolite composites. in Polymer International. 2022;71(1):66-73. doi:10.1002/pi.6284 .
Marinkovic, Filip, Popovic, Dusan, Jovanovic, Jelena, Stankovic, Branislav, Jevtić, Sanja, Adnadjevic, Borivoj, "Thermal and dielectric properties of low-density polyethylene/NaA zeolite composites" in Polymer International, 71, no. 1 (2022):66-73, https://doi.org/10.1002/pi.6284 . .